Claude Haiku 4.5
Nothing here. The model returned empty. We stared at it for a while.
Claude Haiku 4.5 vs Solar Pro 3
Compare Claude Haiku 4.5 by Anthropic against Solar Pro 3 by Upstage, context windows of 200K vs 128K, tested across 39 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or Solar Pro 3?
Claude Haiku 4.5 and Solar Pro 3 are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $0/M for Solar Pro 3. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and Solar Pro 3
Claude Haiku 4.5 is made by anthropic while Solar Pro 3 is from upstage. Claude Haiku 4.5 has a 200K token context window compared to Solar Pro 3's 128K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0/M for Solar Pro 3.
Our Verdict
Claude Haiku 4.5
Solar Pro 3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
99%
Claude Haiku 4.5 uses 4.4x more headings
Claude Haiku 4.5
Solar Pro 3
61%Vocabulary50%
47wSentence Length21w
0.64Hedging0.42
5.1Bold6.5
6.3Lists2.2
0.20Emoji0.17
2.46Headings0.56
0.17Transitions0.12
Based on 24 + 18 text responses
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We read every word. 250 models. 2.14 million words. This is what we found.
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